<link rel="stylesheet" href="./useless.css">

<div class="container">
    <div class="row flowchart">
        <div class="col-xs-3 col-md-1 section section-1 ">

                <div class="line">1</div>    
                <div class="menu">1.选择箱型</div>

        </div>
        <div class="col-xs-3 col-md-1  section section-2">

                <div class="line">2</div>    
                <div class="menu">2.选择箱型</div>

        </div>
        <div class=" col-xs-3 col-md-1 section section-3">

                <div class="line">3</div>    
                <div class="menu">3.选择箱型</div>

        </div>
        <div class="col-xs-3 col-md-1 section section-4"> 

                <div class="line">4</div>    
            <div class="menu">4.选择箱型</div>
            
        </div>
    </div>
</div>
